Table 2. Hydrodynamic Size, PDI, and ζ Potential of SLN Formulations (n ≥ 3).

	size ± SD [nm]	PDI ± SD	ζ potential ± SD [mV]
plain	244.7 ± 30.7	0.24 ± 0.05	–37.8 ± 4.7
CS	261.6 ± 7.4	0.20 ± 0.02	54.7 ± 5.6
CS-Cys	402.3 ± 46.2	0.27 ± 0.02	37.3 ± 5.1
CS-Cys-MNA	533.9 ± 167.7	0.34 ± 0.05	–10.7 ± 6.7
CS-Cys-Cys	422.0 ± 31.2	0.32 ± 0.06	27.3 ± 9.2